Filtration is our sector and
we like to always explore new horizons.

At FILONG, we care about the filters, and most importantly, we care about the user experience. From initial design concepts all the way through to final production, we can truly grasp the clients' requests.

New horizons in filtration

In FILONG we design and manufacture air filters, oil filters, fuel filters for internal combustion engines, cabin filters and oil filters for automatic transmissions, with applications on cars, light commercial vehicles, agricultural and industrial vehicles, since 1998.
For this reason we have thought of to put know-how, production technologies and professionalism at the disposal of those looking for a competent and reliable partner in the filtration sector.
The contribution that our work offers to our partners, is the result of 30 years of experience in the field of filtration, of design skills, of advanced, versatile and reliable production and control technologies, of a innate propensity to the service.


 We FILONG design all our products with CAD-CAM-SCANNER systems, through prototyping and assembly and operation simulations for each component and for each finished product, with performance tests performed in independent laboratories.
This is why we’re the logical choice to produce quality products for OEM contracts and leading automakers.

Test on components and finished products

 Pressure pulses and burst UNI ISO 4548/6
Head loss, Filtration efficiency,
Storage capacity UNI ISO 5011:2000
Fuel filter seal UNI ISO 3724:2007
Burst of fuel filters UNI ISO 2941:2009
Pressure drop fuel filters UNI ISO 3969:2001
A fundamental part of our production process is the constant control of every detail. We are equipped with in-line testing systems that verify 100% of the filters produced and we have a laboratory inside where checks are carried out on the incoming materials and functional tests on the finished products.

Raw Materials

 We FILONG use our almost 30 years of experience to choose the best raw materials for products, ensuring safety, performance, sustainability, and cost-effectiveness. Compliant and specific

Mold Center

· Filter media pleating with rotary and alternative technology
· Filter media assemblies using infrared and ultrasonic technology
· Metal component molding with mechanical and hydraulic presses
· Polyurethane component molding with rotating machines